Over the Hills and Far Away is a regimental campaign game from the fertile gaming mind of Jim Wallman.
Miniatures Rules
FUBAR Medieval Rules
Following up on their FUBAR modern rules, Gawd ‘elp Us Games offers FUBAR Medievals.
Core Game Development Studios offers a set of free wargames rules called Timeline. From the author: Timeline Skirmish is the skirmish game covering all historical ages and into the far future. This game is meant to be fast and furious.
Dunger Racing Game
Dunger Derby is a miniatures game of racing little wasteland beasties called Dungers. You really have to take a look to get it.
Warlord 2085 Science Fiction Rules
Skank Games offers Warlord 2085, a set of free wargames rules for fast play science fiction miniatures.